The following paragraph contains a citation (Osherovich and Weissman, 2001) mistakenly omitted in the original publication of the article.
Our data that the polypeptide with expanded polyQ forms inclusions only in the presence of the [RNQ+] prion are consistent with the latest report showing that aggregation of the MJD protein with polyQ expansion is facilitated in so-called [PIN+] cells (Osherovich and Weissman, 2001). [PIN+] is a non-Mendelian genetic trait promoting emergence of [PSI+] (Derkatch et al., 1997; Osherovich and Weissman, 2001). It was shown that [PIN+] may be caused by a number of potential prion-forming proteins, for example, Rnq1 and New1 (Derkatch et al., 2001). Interestingly, deletion of the NEW1 gene did not significantly affect aggregation of 103Q polypeptide, suggesting the major role of [RNQ+] prion in this process. Whether aggregates of prion form of Rnq1, which has a QN-rich domain, could directly serve as a nucleation site for polyQ, or Rnq1 acts on the polyQ aggregation indirectly is yet to be established.
